Translations:Advanced Field Epi:Manual 2 - Diagnostic Tests/92/en
This difference is due to correlation of the test sensitivities, so that infected animals that are positive to Test 1 are also more likely to be positive in Test 2, as shown by the substantial difference in sensitivity of Test 2 in animals positive to Test 1 (70/100 or 70%) compared to those negative to Test 1 (30/100 or 30%).